/**
*      author: Y_Yao
*      created: 2024-12-08 22:34:52
**/

#include<bits/stdc++.h>

#define int LL
using namespace std;
using LL = long long;
const LL LLINF = 1e18;
const int INF = 0x3f3f3f3f;
const int N = 100 + 7;
int a[N];
int n,k;

void solve()
{
    cin >> n >> k;
    for(int i = 1;i <= n;i++)
    {
        cin >> a[i];
    }

    for(int i = 1;i <= n;i++)
    {
        int flag = 0;
        for(int j = 1;j <= n;j++)
        {
            if(i == j) continue;
            if(abs(a[i] - a[j]) % k == 0)
            {
                flag = 1;
            }
        }
        if(flag == 0)
        {
            cout << "YES" << endl;
            cout << i << endl;
            return;
        }
    }
    cout << "NO" << endl;
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t = 1;
    cin >> t;
    while(t--)
    {
        solve();
    }
    return 0;
}